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Crenshaw Lock

High Security Locks in Tarzana · 24/7 mobile

High Security Locks in Tarzana, California

Crenshaw Lock Company installs pick-, bump- and drill-resistant high security locks and restricted keys throughout Tarzana, California. We are a 24/7, fully mobile locksmith, so we come to your home or office at any hour. Call (323) 997-8867 to talk through your property and options.

  • Mobile to your Tarzana location
  • Available 24/7
  • Price quoted before we start
Call (323) 997-8867or tap to call — we answer 24/7
High-security lock cylinder with a dimple key
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A standard builder-grade deadbolt is built to a price, not to resist a determined attempt. High security locks are different. They use tighter tolerances, hardened steel inserts, more complex pin or sidebar systems, and keys that cannot be duplicated at a hardware-store kiosk. For a property owner in Tarzana, that can mean the difference between a lock that merely closes the door and one that is genuinely hard to defeat by picking, bumping, or drilling.

Tarzana is an unusual mix. North of Ventura Boulevard you find 1950s ranch homes and apartments, often still wearing original or mixed builder hardware. South of the Boulevard, the Santa Monica Mountains hillside holds custom and gated estates with driveway gates, smart locks and intercoms. Along Ventura itself runs a dense corridor of medical and professional offices. Each of these needs a different kind of high-security thinking, and we plan accordingly rather than selling one package to everyone.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, led by owner and lead technician David Shar. We are mobile only, with no storefront to visit. We bring the work to you, assess your doors and frames on site, and recommend only what makes sense for the property and how it is used.

How it works in Tarzana

  1. 1

    Talk through your goals by phone

    Call (323) 997-8867 and tell us what you are protecting and what worries you: a hillside entry, a suite with many staff, or an older ranch house with tired hardware. We ask about door type, current locks, and who needs keys, so the visit starts with a clear plan.

  2. 2

    On-site assessment of door, frame and strike

    A high security cylinder is only as strong as the door around it. We look at the door material, the frame, the strike plate, hinge side, and any glass nearby. On older Tarzana flats homes, a weak frame or short strike screws are often the real vulnerability.

  3. 3

    Choose the right lock and key system

    We explain the options in plain terms: restricted keyways, pick- and bump-resistant cylinders, drill-resistant hardened inserts, and how key control works. For offices we discuss master-key structure; for estates we consider how locks work alongside smart locks and gate hardware.

  4. 4

    Installation and reinforcement

    We install the new locks, fit the cylinders cleanly, and reinforce strikes or frames where needed so the hardware performs as designed. If a mortise or older lock is seized or worn, we address that properly rather than working around it.

  5. 5

    Testing and key handoff

    We test every lock repeatedly, check the door closes and latches smoothly, and hand over keys. We explain the key-control rules that come with your system, including how additional keys are obtained and why they cannot be copied casually.

  6. 6

    Ongoing support

    If staffing changes, a housekeeper leaves, or a tenant moves out, call us to rekey or adjust the system. Because we are 24/7 and mobile, you are not waiting on store hours to restore control of your keys.

Need high security locks in Tarzana?

24/7 Mobile Locksmith across Greater Los Angeles & Ventura County. We answer 24/7.

Call (323) 997-8867

What affects the price

  • The number of locks and doors involved, from a single front entry to a full home or multi-door office suite.
  • The grade and type of high security cylinder or lockset chosen, including restricted keyway and key-control features.
  • Door and frame condition, since reinforcement of strikes, frames or worn hardware may be needed to get full benefit.
  • Whether you need rekeying to a master-key system, which adds planning for key hierarchy and the number of keys cut.
  • Compatibility with existing smart locks, gate intercoms or older mortise hardware that may need rebuilding or replacement.
  • The time of day and location of the visit, since we serve around the clock and travel to you.

Why Tarzana chooses us

  • Fully mobile, so the assessment and installation happen at your door, whether that is a hillside gate or a Ventura Boulevard office.
  • In business since 1987, with David Shar as owner and lead technician, so the experience behind the advice is real.
  • We look at the whole door system, not just the cylinder, because a strong lock in a weak frame does not protect much.
  • We work with mixed property types common in Tarzana: ranch homes, hillside estates and master-keyed medical suites.
  • We recommend what fits your risk and budget and will tell you when a standard upgrade is enough.
  • Available 24/7 for urgent situations, such as securing a property right after a key is lost or staff turn over.

High Security Locks across Tarzana

Tarzana's geography shapes its security needs. In the flats north of Ventura Boulevard, around streets near Reseda Boulevard, Tampa Avenue and Lindley Avenue in ZIP 91356, many 1950s ranch homes still carry older or mismatched hardware. A high security deadbolt, paired with a reinforced strike, is often the most useful single upgrade there. Older mortise locks can seize with age, and we can extract and rebuild or replace them as part of the work.

South of the Boulevard, the hills toward Mulholland Drive in ZIP 91356 and 91357 hold custom and gated estates. These properties tend to combine high-security locks, smart locks and driveway gates. A common scenario is a household changing housekeepers or staff, which calls for rekeying, updating smart-lock codes and checking the gate intercom so old access is closed off. Restricted keys help ensure that new keys are not casually duplicated afterward.

Along the Ventura Boulevard medical and commercial corridor, near Providence Cedars-Sinai Tarzana Medical Center, offices face a different problem: many people hold keys. After staffing changes, a master-key rekey with restricted keys lets a practice regain control without replacing every door. Whether you are near the El Caballero area, the Tarzana Recreation Center, or off Wilbur or Corbin Avenue, with quick access from US-101, we come to you. Call (323) 997-8867.

Locked out or need a locksmith now?

24/7 Mobile Locksmith across Greater Los Angeles & Ventura County. We answer 24/7.

Call (323) 997-8867

Other Tarzana locksmith services

See all of our Tarzana services, or our citywide high security locks page.

High Security Locks in Tarzana — FAQs

What makes a lock "high security"?
High security locks resist common attacks such as picking, bumping and drilling. They typically use tighter tolerances, hardened inserts and more complex internal mechanisms, along with restricted keys that are harder to duplicate.
Do I need to replace my whole door?
Usually not. Often the cylinder or deadbolt is upgraded and the strike plate and frame are reinforced. We inspect the door during the visit and tell you honestly if anything beyond the lock needs attention. Call (323) 997-8867 to discuss.
Can you install high security locks at a hillside gated home south of Ventura Boulevard?
Yes. We are fully mobile and travel to hillside estates. We can install high security locks on entry doors and advise on how they work with your smart locks and gate intercom, especially after staff or housekeeper changes.
Can a medical office on Ventura Boulevard use high security locks with a master key?
Yes. We can set up a master-key system using high security cylinders and restricted keys, so staff have the access they need and key duplication is controlled. It is useful after staffing changes.
My older ranch home has a seized mortise lock. Can that be fixed?
Often yes. We can extract a seized mortise lock and rebuild it, or recommend replacement with a modern high security option if the old hardware is too worn. We will explain which makes sense.
Are high security keys really impossible to copy?
They are much harder to copy than standard keys. Restricted keyways and key-control systems limit duplication to authorized orders. No system is absolute, but it greatly reduces casual copying.
Do you have a shop I can visit in Tarzana?
No. We are mobile only, with no storefront. We come to your home or business at any hour. Call (323) 997-8867 to arrange a visit.
Can high security locks work with smart locks?
In many cases, yes. Some setups use a high security deadbolt on one door and a smart lock on another, or combine them with other access control. We assess compatibility during the visit.
DS

Reviewed by David Shar — Owner & Lead Technician

Crenshaw Lock Company has served Greater Los Angeles & Ventura County since 1987.

Last updated 2026-10-12.

Call (323) 997-8867 · Open 24/7